OP, frankly do not understand your post.
You dont need to be on lease.
If you don't understand the process use an agent to assist.
Your wife can do a TM30 and you could obtain another 12 month extension.
Simple and only requires 400k in bank for 2 months prior to application.
A ME Non (marriage) from Savannakhet is an option.
However you have the funds.
Why bother with ME Non O.
Your other suggestion of mix and match tourist visas, visa exempt etc is just crazy.